Commit 48caa6f1 authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
Browse files

[media] dvb_frontend: do not allow statistic IOCTLs when sleeping 



Demodulator cannot perform statistic IOCTLs when it is not tuned.
Return -EAGAIN in such case.

Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 3c16b2b3

drivers/media/dvb-core/dvb_frontend.c

+25 −9
Original line number Diff line number Diff line
@@ -2131,27 +2131,43 @@ static int dvb_frontend_ioctl_legacy(struct file *file, 
			err = fe->ops.read_status(fe, status);

		break;

	}



	case FE_READ_BER:

		if (fe->ops.read_ber)

		if (fe->ops.read_ber) {

			if (fepriv->thread)

				err = fe->ops.read_ber(fe, (__u32 *) parg);

			else

				err = -EAGAIN;

		}

		break;



	case FE_READ_SIGNAL_STRENGTH:

		if (fe->ops.read_signal_strength)

		if (fe->ops.read_signal_strength) {

			if (fepriv->thread)

				err = fe->ops.read_signal_strength(fe, (__u16 *) parg);

			else

				err = -EAGAIN;

		}

		break;



	case FE_READ_SNR:

		if (fe->ops.read_snr)

		if (fe->ops.read_snr) {

			if (fepriv->thread)

				err = fe->ops.read_snr(fe, (__u16 *) parg);

			else

				err = -EAGAIN;

		}

		break;



	case FE_READ_UNCORRECTED_BLOCKS:

		if (fe->ops.read_ucblocks)

		if (fe->ops.read_ucblocks) {

			if (fepriv->thread)

				err = fe->ops.read_ucblocks(fe, (__u32 *) parg);

			else

				err = -EAGAIN;

		}

		break;





	case FE_DISEQC_RESET_OVERLOAD:

		if (fe->ops.diseqc_reset_overload) {

			err = fe->ops.diseqc_reset_overload(fe);